Assertion : Under conditions of high light in | vedclass

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Question

(C) Photorespiration is a process that occurs when $CO_2$ levels are low and $O_2$ levels are high,causing the enzyme $RuBisCO$ to act as an oxygenase

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If the Assertion is correct but Reason is incorrect.

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(C) Photorespiration is a process that occurs when $CO_2$ levels are low and $O_2$ levels are high,causing the enzyme $RuBisCO$ to act as an oxygenase rather than a carboxylase.Under high light intensity,if $CO_2$ is limited,the light energy absorbed by the photosynthetic apparatus cannot be fully utilized for the Calvin cycle.This excess energy can lead to the formation of reactive oxygen species $(ROS)$,which cause photo-oxidative damage to the plant cells.Photorespiration helps dissipate this excess energy by consuming $O_2$ and $ATP$,thereby protecting the photosynthetic machinery from damage.Therefore,the Assertion is correct,but the Reason is incorrect because the excess energy,if not utilized,$DOES$ cause damage to the plants.

Similar Questions

$RuBP + O_2 = ?$ (Photorespiration)

Photorespiration is absent in which of the following?

During photosynthesis,the process that utilizes oxygen is found to occur in:

$C_2$ and $C_3$ cycles are predominantly found in:

The inhibition of photosynthesis at high concentrations of $O_2$ is known as:

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